Operator: tsentalovich
Yesterday morning nozzle regeneration was unsuccesful. I don't have any idea what was wrong, but the intensity after regeneration was very low. Everything was done as usually (although I did by the phone), and yet something didn't work out. It appears, this filthy ABS developed some personal attitude, and requires my attendance upon the regeneration. The nozzle has been rewarmed again yesterday evening, and now it is fine.
While turning ABS on, I observed with a great scientific interest that SFT probe reading depends not only on the ring current, but target thickness as well. Most likely, it depends on beam tune as well. It is just a matter of radiation going through the sensor.
Started pol. data taking at about 1 am. It was rather smooth... couple of times I spotted the transitions set wrong (due to this SFT probe problem) and set them aright manually.... but I might miss a few as well.
Once (after 9-th run) scalers wouldn't respond, and I had to wake up Karen and to restart online GUI upon her advice (what online GUI has to do with it????). Also had to reboot HV GUI once.
Genya
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